Shure 52 User Guide

SHURE BROTHERS

Microphones and Acoustic Devices

225 WEST HURON STREET :: CHICAGO 10, ILLINOIS

PHONE DELAWARE 4550 :: CABLE: SHUREMICRO

INCORPORATED

MODEL 52 "ECONODYNE"

High-Level, High-Impedance Dynamic Microphone

General: Model 52 is a pressure operated moving

coil dynamic microphone having high output level, smooth response and a semi-directional pickup char-

acteristic.

The case is streamlined for improved acoustical per-

formance and modern appearance.

Each microphone is provided with a 15 ft. single con-

ductor plastic jacketed shielded cable.

Applications: The Model 52 is suitable for public

address, recording, call systems, radio telephone equip-

ment, and similar applications. Because of its high output

level, Model 52 microphone may be used with all standard

public address amplifiers.

The microphone is unusually rugged and is practically

immune to severe moisture and temperature conditions.

DATA SHEET

DATE: APRIL, 1947

SUBJECT:

Model 52 High-Impedance "Econodyne" Dynamic Microphone.

Connections: The Model 52 has an internal trans-

former to provide a high impedance output. The microphone may be used with any crystal microphone amplifier or other amplifier with an input impedance of 100,000 ohms or more.

The inner or "hot" conductor of the cable should be

connected to the grid of the first tube in the amplifier across a load resistance of 100,000 ohms or more. The shield should be connected to the chassis or amplifier ground. Cable lengths longer than 25 feet will be accompanied by some loss of high frequency response.

Installation:

thread and may be mounted on any Shure desk or floor stand.

Operation:

care are necessary in the operation of the Model 52 Dynamic Microphone. It will operate satisfactorily under ordinary conditions in hot and cold climates. To retain the full strength of the permanent magnet and to maintain alignment of structure, dropping or other severe mechanical shocks should be avoided.

The Model 52 has the standard 5/8"-27

No special precautions beyond ordinary

SPECIFICATIONS

Voltage Sensitivity: 52 db below 1 volt per

dyne per sq. cm. when loaded with 100,000 ohms or more. This is equivalent to 2.5 millivolts r.m.s. per dyne per sq. cm. across 100,000 ohms or more.

SPECIFICATIONS, Continued

MODEL 52

Diameter of Case .......................

Length Overall .........................

Finish

................................. SATIN CHROME

Net Weight (less cable). ................ 7/8 lb.

Shipping Weight .......................

Code Word (including 15' cable) ......... RUMIN

2-13/32"

3-1/4"

2-1/2 lb.

Recommended Load Impedance: 100,000 ohms

or more.

Guarantee: Each micro hone is guaranteed to be

free from electrical and mechanical defects for a period

of one year from date of shipment from the factory, provided all instructions are complied with fully. In case of damage, return the microphone to the factory for repairs. Our guarantee is voided if the microphone case is opened.

27A34 (4-47).

Printed in U.S.A.